Anchor shuttle-box motion for looms



(N0 ModeL) V 0. STROBEL.

ANCHOR SHUTTLE BOX MOTION FOR LOOMS.

Patented Dec. 1, 1885.

WITNESSES:

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UNITED STATES PATENT @rrrcn.

CHARLES STROBEL, OF PHILADELPHIA, PENNSYLVANIA.

ANCHOR SHUTTLE-BOX MOTION FOR LOOMS.

SPECIFICATION forming part of Letters Patent No. 331,741, dated December 1, 1885.

Application filed June 6, 1885.

To all whom it may concern:

Be it known that I, Onxnrns STROBEL, a citizen of the United States, residing in the city and county of Philadelphia, State of Pennsylvania, have invented a new and useful Improvement in Anchor Shuttle-Box Motions for Looms, which improvement is fully set forth in the following specification and accompanying drawings, in which- Figure 1 represents a side elevation of part .of a loom-frame having applied thereto the shuttle-box motion embodying my invention. Fig. 2 represents an end view thereof, the shuttle-boxes being omitted. Fig. 3 repre sents a vertical section on line m m, Fig. 1, the box-lever being in elevation.

Similar letters of reference indicate corresponding parts in the several figures.

The ordinary anchor-box motion consists of a long oscillating lever, which lever is connected to and acts on the shuttlebox rod. Said long lever has a series of steps on opposite sides of its fulcrum,which steps are acted on alternately in raising or depressing the shuttle-boxes by a double-acting lifting-pawl, or, as it is generally called,the anchor. Said anchor swings near the lower end of what is called the yoke, said yoke sliding in guides on the loom-frame, and having a vertical movement limited and controlled by the lift or drop of a cam on one of the loom-shafts, said cam acting on a frictiorrroller mounted on a stud near the top of the yoke. Said cam ordinarily has only lift or drop enough to allow the yoke and anchor to descend so far as is necessary to allow the anchor to swing under one step, said step being acted on by the anchor as soon as the cam begins to lift the yoke to which the anchor is attached. The pattern pins or screws of the wheel or chain generally used are of different lengths in proportion to the distance that the anchor is required to swing, in order to act on the different steps on the long lever. The anchor is moved by a small rod connected to a feelerlever of angular form, the long limb of the feeler-lever being connected to an arm of the anchor, and the short limb being engaged by the pins or screws of the pattern wheel or chain. The wheel or chain is moved by a long pusher or pawl, which is operated by an independent cam on the loom-shaft. The lifting-lever has attached to it on the side opposite to the lifting-point an are, which has a Serial No. 167,817. (No model.)

series of notches corresponding to the number of boxes, and with which engages a projection or tooth of a lever whose fulcrum is above the are on a stud fixed to the loom-frame, said lever being operated by a cam and lifted at the time when the long lever and boxes are to be shifted. It will be understood that in this construction, as the step' on the long lever which is engaged by the anchor corresponds to and regulates the movement of the shuttleboxes, the anchor dropping only low enough to swing under and lift one step, it would only move the boxes one step, or far enough to bring the next or adjoining box of the series to the level of the raceway. It will be seen that by this construction the boxes cannot be called at will, as is desirable in weaving fancy or complicated patterns, the combinations being limited to those which call for the boxes in regular order. The cam in the ordinary box-motion may be and is sometimes given throw enough to allow the anchor to drop low enough to swing under two steps, acting on the second step when the yoke is lifted, by these means moving the long lever and the boxes a double distance, or skipping one box. This cam, however, has the disadvantage of dropping low enough to take two steps at all times, even when the pattern calls for adjoining boxes, or a single step on the long lever, in which case the anchor would only swing under and lift the first step, the cam having dropped the yoke and anchor lower than is required at this lift. The cam would in this case be compelled to lift the yoke and anchor some distance before the anchor would come in contact with the step which it is required to lift. It will be seen that the full time or the entire lift of the cam will not be utilized in making a sin gle box lift, or the lift of one step on the long lever. As the boxes must be in position at a certain time for the travel of the shuttle, and as the cam has not been moving the boxes during its entire lift or throw,but only during a part of it, it will be seen that the boxes must be moved very rapidly to get into position on time. This will give the boxes a disagreeable jerking movement not at all desirable, taking at the same time considerably more power to move the boxes on account of the in creased speed. By this construction such patterns can be woven as call for adjoining boxes, or even skip one box in the series of boxes, although this is accomplished in a ICO not free to move at this time, because of either of their steps being pressed against the tooth F or the pin P on the lever G, the rod E, that connects the lever D with the feeler c, has a slot at the end which is connected to the feeler, said slot receiving a pin or screw on thefeeler. The feeler is thus permitted to move without compelling the levers D and O to move at the same time, leaving said levers free to move when the yoke is raised or at the top of its stroke, at which time the pressure of the steps against the tooth F or the pin 1? will be relieved, so that the levers, with their connecting-rods, are free to drop under the influence of the weighted arm of the lever O in the direction the feeler has previously moved, until the screw on the feeler-lever comes in contact with the end of the slot of the connecting-rod E. The levers D and 0 control the downward movement of the yoke and anchor through their respective step a or hook O. When the weighted lever O has its stepped or hooked end in contact with the pin on the lever C, it will form a fulcrum for the lever C, and the yoke and anchor will be given a movement equal to one step on the lever A by the cam B, which has a throw equal to two steps on the lever A. WVhen the levers D and O are moved laterally for a single skip, the lever 0 will be disengaged, and the lever D will have its step a engaged by the tooth F. By this means the yoke and anchor will have a movement equal to the lift of the cam, or two steps on the lever A. Should the levers D and 0 be moved laterally for a full lift or drop or the skipping of two boxes, both said levers will be disengaged, and the end of the lever C will remain in contact with the stop G on the loom-frame, and the yoke and anchor will be free to drop low enough to swing under all the steps A of the lifting-lever A. During this entire lift the yoke will receive more movement than the cam B lifts in proportion to the leverage of the lever O. The lever A must be lifted to the same points each time, for the purpose of bringing the notches in the arc B to the right height, so as to allow the projection on the locking-lever (D to enter said notches, for the purpose of locking the lever and shuttle-boxes'during the movement of the shuttle, as customary in the ordinary construction of box-motions. To secure this result the yoke is raised to the same point at each lift by the cam B, raising the lever 0 near its middle. XVhen the free end of said lever comes in contact with the stop G, the yoke continues to rise until the cam has completed its lift, by which means the cam lifts the yoke through the medium of the lever O to the same point at all times. The yoke need not descend as low to make a single box lift, or a lift which is the height of one step on the box-lever A, as it would to make a two or three box lift, which would be the height of two or three steps on the lever A. If the yoke did drop to thelowest point at all times in making a single box lift, there would be considerable lost motion of the yoke and anchor before the anchor could act on the proper step of the lever A in making a change of only one or two boxes, thereby losing part of time which can be allowed for shifting the lever A or boxes. It will be seen that the yoke and anchor will begin to lift the long lever A at different points, according to the distance the shuttle-boxes are to be shifted, but always beginning to lift at the same time in the rotation of the loom-shaft, or at the same radial line on the cam, whether it be a single, double, or full lift or drop, by which means each movement of the boxes will take the same time in the revolution of the loom-shaft,which is usually one-quarter of the rotation of said shaft.

Having thus described my invention,what I claim as new, and desire to secure by Letters Patent, is-

1. Thelever C, in combination with the yoke B, the loom-shaft B, the cam B thereon, the loom-frame, the pivoted stop thereon, and the spring G of said stop, substantially as described.

2. The lever G, lever D, with step a, and means, substantially as described, for controlling the position of said lever D, in combination with yoke B, the cam B, the shaft B, the tooth or projection F, the pin 1? on the lever 0, the weighted lever O, and means, substantially as described, for connecting the levers O and D, substantially as and for the purpose set forth.

3. The rod E, having a slotted end, in combination with the feeler c, the pattern-wheel and operating mechanism therefor, substantially as described, the lever D, lever 0, pin F, yoke B, and operating-cam, weighted lever 0, with hooked end 0, the pin P, and the rod D, substantially as and for the purpose set forth.

4. The anchor and yoke and their operating-cam and the lifting-lever, in combination with the lever C, the lever D, with a step, means, substantially as described, for controlling the position of the lever D, the tooth F, stop G, the pin P, weighted lever O, with hooked end 0, and the connecting-rod D, substantially as described.

5. The anchor, the feeler 0, connections, substantially as described, between said feeler and the anchor, the yoke and the operatingcam, the lilting-lever, the pattern wheel or chain provided with a double row of pins or screws, and the pusher or pawl A and its operating mechanism, in combination with the additional feeler a, rod E, lever D, with step a, lever C, tooth F, stop G, weighted lever O, with hooked end 0, the pin P on the lever C, and the connecting-rod D of the levers D O, substantially as described.

CHARLES STROBEL.

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